Bug#750785: Slowness with context and xetex

[Behdad Esfahbod]

Thanks Hilmar.  See below:

On Mon, Aug 11, 2014 at 5:40 PM, Hilmar Preusse <hill...@web.de> wrote:
>
> static hb_bool_t
> hb_shape_plan_matches (const hb_shape_plan_t          *shape_plan,
>                        const hb_shape_plan_proposal_t *proposal)
> {
>   return hb_segment_properties_equal (&shape_plan->props,
> &proposal->props) &&
>          hb_shape_plan_user_features_match (shape_plan, proposal) &&
>          ((shape_plan->default_shaper_list && proposal->shaper_list ==
> NULL) ||
>           (shape_plan->shaper_func == proposal->shaper_func));
> }
>

Before the return, add something like this:

printf("DEBUG props %d features %d default_shaper %d shaper_list %d plan
func %p proposal func %p\n",
         hb_segment_properties_equal (&shape_plan->props, &proposal->props),
         hb_shape_plan_user_features_match (shape_plan, proposal),
         shape_plan->default_shaper_list, proposal->shaper_list == NULL,
         shape_plan->shaper_func, proposal->shaper_func);